环境因素对B10铜镍合金耐蚀性的影响  

Effect of Environment Factors on Corrosion Behavior of 90-10 Cu-Ni Alloy in Seawater

作　　者：孙婷婷[1,2] 李宁[1] 薛建军[2] 张海丽[1,2] 

机构地区：[1]海洋腐蚀与防护国防科技重点实验室,山东青岛266071 [2]南京航空航天大学,南京211100

出　　处：《装备环境工程》2010年第4期25-28,35,共5页Equipment Environmental Engineering

摘　　要：通过环境扫描电镜、扫描探针显微镜、交流阻抗谱、动电位极化测试,考察了温度、pH值、Cl-含量等因素对B10铜镍合金耐海水腐蚀性能的影响。结果表明,在0～60℃范围内,温度升高,B10腐蚀加速;B10在强碱性环境中的腐蚀受到OH-的抑制;Cl-含量升高阻碍氧化膜的生成,降低B10的耐蚀性;海水流速高于3 m/s后,B10耐冲刷腐蚀的能力急剧降低,且含砂海水的冲刷对该材料的破坏作用更为显著。Abstract： The effect of different factors on corrosion behavior of 90-10 Cu-Ni alloy in seawater was investigated by electrochemical impedance spectroscopy, potentiodynamic polarization, corrosion rate and morphology of 90-10 Cu-Ni alloy. The result showed that with the raising of temperature, the corrosion rate of 90-10 Cu-Ni alloy accelerated; the corrosion reaction of 90-10 Cu-Ni alloy occurred slowly in strong basic aqueous seawater; the existence of generous CF impeded the form of the oxidation film, accelerated the corrosion rate. The existence of grit could accelerate the corrosion of 90-10 Cu-Ni alloy also.

关 键 词：B10铜镍合金 温度 PH Cl-含量 流速 

分 类 号：TG178[金属学及工艺—金属表面处理]